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LT1461

PRODUCTION

Micropower Precision Low Dropout Series Voltage Reference Family

Data Sheet (Rev. C) Product Selection Table
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Overview

  • Trimmed to High Accuracy: 0.04% Max
  • Low Drift: 3ppm/°C Max
  • Low Supply Current: 50μA Max
  • High Output Current: 50mA Min
  • Low Dropout Voltage: 300mV Max
  • Excellent Thermal Regulation
  • Power Shutdown
  • Thermal Limiting
  • All Parts Guaranteed Functional from –40°C to 125°C
  • Voltage Options: 2.5V, 3V, 3.3V, 4.096V and 5V
  • AEC-Q100 Qualified for Automotive Applications

The LT1461 is a family of low dropout micropower band-gap references that combine very high accuracy and low drift with low supply current and high output drive. These series references use advanced curvature compensation techniques to obtain low temperature coefficient and trimmed precision thin-film resistors to achieve high output accuracy. The LT1461 family draws only 35μA of supply current, making them ideal for low power and portable applications, however their high 50mA output drive makes them suitable for higher power requirements, such as precision regulators.

In low power applications, a dropout voltage of less than 300mV ensures maximum battery life while maintaining full reference performance. Line regulation is nearly immeasurable, while the exceedingly good load and thermal regulation will not add significantly to system error budgets. The shutdown feature can be used to switch full load currents and can be used for system power down. Thermal shutdown protects the part from overload conditions. The LT1461 is available in 2.5V, 3V, 3.3V 4.096V and 5V options.

Applications

  • A/D and D/A Converters
  • Precision Regulators
  • Handheld Instruments
  • Power Supplies
LT1461
Micropower Precision Low Dropout Series Voltage Reference Family
LT1461 Application Circuit LT1461 Pin Configuration LT1461 Performance Graph
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 2

Technical Articles 2

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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LT1461-2.5
  • LT1461-3
  • LT1461-3.3
  • LT1461-4.096
  • LT1461-5
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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